““We have not been able to allocate you a NINo because the evidence you gave us does not support your application. We have carefully considered the evidence you provided and, where necessary, have made further checks and decided that the work you do and the way in which you are engaged to do that work is not considered to be self-employment. Self-employment is not determined by either your wish to be self-employed or the person using your service. This can only be established by analysis of the facts.”